Tag: Notification not received when Application is Closed or Killed

Following are steps to Enable Background operations or Service in the background. Customized Android Operating Systems add some strict limitations on background services to boost up battery life and make the device perform better. Many mobile companies use them on customized OS like Xiaomi uses MIUI, Oppo uses ColorOS, Vivo use FuntouchOS and Huawei EMUI. But a normal user or developer sometimes face the following issues due to these optimizations in the customized OS.